sl40e300 / 040211

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Data

sheet

Order information

Order number

Description

SL40.300
SL40.301
SLZ01

basic version, passive load sharing
with signal/measurement outputs, signal output connector included: Order number XFB-S-W8-MSTB 06-W8)
Screw mounting set, two needed per unit

Clever Power

SL40.300/.301

• Input: 3 AC 400...500V
• Output: 24...28V / 960W (1080W)
• No switch-off at overload
• Ideal for parallel operation
• Output for measurement and

logical signals (.301)

CUL/CSA-C22.2

EMC and

Low Volt.

UL60950 E137006

UL508 LISTED
IND. CONT. EQ.

No 950-M90

18 WM, 60°C

Directive

CB

scheme

IEC60950

Input

Construction / Mechanics *

Output

(signal outputs see overleaf)

Efficiency, Reliability etc. *

Input voltage

3 AC 400...500 V, – 15 %, + 15 %
47-63 Hz,

Suitable for IT power systems

Rated Tolerances
• Continuous operat.
• Short term (1 min)

at 24 V/40 A

340-575 V AC
300-620 V AC

Input current

3.0 A

Inrush current

< 30 A

Inrush current limiting done with a fixed 23R resistor (not a thermistor)
which is bridged after the unit is running, so losses are minimized. That
means no reset time even at a warm-start.

Fuse loading

3 A

2

s

To be fused with a 3 x 10A, B-type 'circuit-breaker' switch based on the
usual thermomagnetic overload sensing principle (used anyway to fuse
the input lines; unit has no internal fuses).

Harmonic current
emissions (PFC)

acc. EN 61000-3-2

Transient
handling

Active transient filter incorporated, so tran-
sient resistance acc.to VDE 0160 / W2 (1300 V /
1.3 ms), for all load conditions.

Hold up time

min. 15 ms
at 400 V AC, 24 V / 40 A

Housing dimensions and Weight
• W x H x D
• Free space for

ventilation

• Weight

275 mm x 124 mm x 117 mm (+ DIN rail)
above/below each 70 mm recommended
left/right each 25 mm recommended
3.3kg

Connections
(input and output)

robust screw terminals, connector size range:
• solid: 1.5...6 mm

2

(Outp.: 0.5...16 mm

2

)

• flexible: 1.5...4 mm

2

(Outp.: 0.5...10 mm

2

)

Output: Minus terminal with 2 connectors,
current handling per output: 40 A (max. acc.
to UL) resp. 56 A (max. acc. to VDE)

Design advantages:
• All connection blocks mounted on front panel for ease of access.
• PVC insulated cable can be used for all connections, as the connection

blocks are mounted in the cooler area on the underside of the unit.

• Power density: 230 W per litre housing volume.

Output voltage

24...28 V DC, adjustable by (covered) front
panel potentiometer. Adj. range guaranteed

Output noise
suppression

Radiated EMI values below EN 61000-6-3, even
when using long, unscreened output cables.

Ambient temperature
range T

amb

Operation: 0°C...+70°C (>60°C: Derating)
Storage: -25°C...+85°C

Rated continuous loading with convection cooling
• T

amb

=0°C - 60°C

• T

amb

=0°C - 45°C

24 V / 40 A (960 W) resp. 28 V / 35 A (980 W)
24 V / 45 A (1080 W) resp. 28 V / 38 A (1064 W)
short-term (< 1 min.) also at 60°C admissible

Derating

typ. 24 W/K (at T

amb

=+60°C...+70°C)

Voltage regulation

better than 2% over all

Ripple (incl. spikes)

< 50 mV

PP

(20 MHz bandw., 50

Ω measurem.)

Over-voltage protection At 32 V ± 10%: switch to hiccup mode

Front panel indicators: • Green LED on, when V

out

> U

T

, where U

T

is

ca. 2 V below Vout adjusted (24V...28V)

• Red LED on, when V

out

< U

T

Parallel operation

SL40.300: yes, no active current sharing
SL40.301: yes, active current sharing, please re-
fer to “Output Signaling” - “Current Balance”

Current sharing by balancing line (active sharing principle, SL40.301) or
’soft’ output characteristic (passive sharing principle, SL40.300; charac-
teristic switch-over by jumper as in SL20/SL30 without opening the unit)

Power Back Immunity

< 35 V

Efficiency

typ. 92.5%

(400 VAC, 24 V / 40 A)

Losses

typ 78 W

(400 VAC, 24 V / 40 A)

MTBF

SL40.300: 305,000 h

SL40.301: 268,000 h

acc. to Siemensnorm SN 29500
(24 V/40 A, 400 VAC, T

amb

= +40 °C)

Life cycle (electrolytics)

The unit exclusively uses longlife electrolytics,
specified for +105°C (cf. ’The SilverLine’, p.2).
High reliability and lifetime, as
• only 6 aluminum electrolytics and
• no small aluminum electrolytics are used.

Your partner in power supply:

European
Power Supply
Manufacturers
Association

PULS GmbH

Arabellastraße 15

D-81925 München

Tel.: [phone]

www.puls-power.com

Fax: [phone]

Data sheet

2 / 2

sl40e300 / 040211

Bayerns Best 50
Czech 100 Best
EuropeÕs 500

Specifications valid for 3 x AC 400V input voltage, +25°C ambient temperature, and 5 min run-in time, unless otherwise stated. They are subject to change without prior notice.

Start / Overload Behaviour

Output for measurements and signalling

(SL40.301 only)

Further Information

Startup delay

< 0.5 s

Rise time

< 0.1 s (40 A, 20,000

µF)

Overload behaviour

PULS Overload Design (see diagram at the right), thus neither
switch-off nor hiccup at overload

Advantages:
• High short-circuit current, giving large ’start-up window’: unit starts reliably even with

awkward loads (DC-DC converters, motors). No ’sticking’ as can occur with fold-back
characteristics.

• Even longer overload possible as unit does not switch off.

’Shut-Down’: Shut-down input: units switches off, if
• Input is connected to ’Signal GND’ (

∆U < 1V) or

• +20...28 V Voltage are applied to this input and ’Signal GND’ (max. 20 mA).

’Power Good’: Power-Fail / -Good
• Signal: High (24 V) at correct operation (no overload, over-temp., short-circuit). At

’low’ signal and nominal load, output remains at nominal voltage for at least 5 ms.

• Corresponding ground is ’Signal GND’ output (current source)
• Permissable load resistance:

≥ 300 Ω, e.g. 24V relais, control lamp (no dropping resistor

needed for LED), scoring logic. To get 5V level: connect this output and ’Signal GND’
via 5V zener diode (0.5W) + 1k

Ω resistor switched in parallel

’Thermal Alarm’: warning signal at over-temperature
• Signal: High (24 V) at correct operation (no over-temperature). If signal switches to

’low’ and temperature increases further, output current is lowered,

• Ground and permissable load resistance: see ’Power Good’ output

’Current Monitor’: Current measurement output, usable with
• Voltmeter

• Ammeter

1 V per 10 A output current (to ’Signal GND’ output, R

in

(volt-

meter) > 100 k

Ω)

1 mA per 10 A output current (to ’Signal GND’ output, R

in

(am-

meter) < 100

Ω)

’Current Balance’: balancing output for current sharing
• For active current sharing at parallel operation interconnect the "Current Balan-

ce" output terminals of all paralleled units. The corresponding ground is the

pole. Do not interconnect the "Signal GND" outputs. Exact output voltage re-

gulation is effective when the output current is greater than 0.4A. Current sharing
also works reliable with decoupling diodes and modules for redundancy applica-
tions.

’Signal GND’: Ground terminal for all signal outputs of this unit (not ’Current Balance’)
• Do not connect this terminal to the

terminal

of this unit (not even across a load: risk

of overload)

• Do not connect this terminal to any output of another unit (not even with ’Signal

GND’ of another unit)

• max. load current: 0.3 A

Signal ground is internally fused by a self-curing fuse (polyswitch)

For further information, especially about EMC, Connections, Safety, Approvals,
Mechanics und Mounting see page 2 of the „The SilverLine“ data sheet. For detailed di-
mensions please see the SilverLine mechanics data sheet SL40.

0

20

40

60

80

340

380

420

460

500

Input voltage Vin [V]

Hold-up time [ms

]

Iout = 16 A

Iout = 24 A

Iout = 32 A

Iout = 40 A

Iout = 45 A

82%

84%

86%

88%

90%

92%

94%

5

10

15

20

25

30

35

40

45

Output current Iout [A]

Efficiency [%

]

3 x 340 VACin
3 x 400 VACin
3 x 480 VACin

0

4

8

12

16

20

24

28

32

0

10

20

30

40

50

Vout=24V, Single Mode
Vout=24V, Parallel Mode
Vout=28V, Single Mode
Vout=28V, Parallel Mode

Output current Iout [A]

Output vol

tage V

out [V

]

SL40.300:

SL40.301: no switch-over,
charact. as SL40.300, Single Mode

Efficiency (typ., at V

out

=24V)

Hold-up time (min., at V

out

=24V)

Output V/I characteristic (typ.)